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# Planets - Calculate Diameter

Calculator for the diameters of Sun, Moon, Earth and the planets in kilometers, miles and compared to each other. Celestial bodies, especially fast rotating gas giants and stars, are bodies of revolution, which are thicker in the rotaion plane than in the polar cross section (so-called oblate spheroids). Therefore, three different kind of diameters can be choosen here.

Diameter:Round to decimal places.

Please enter first the kind of diameter, then enter one value. The other values will be calculated.

Example: Saturn has about nine times Earth's diameter, slightly more for the equatorial, slighly less for the polar diameter.

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